Combined handle and pulley for cream-separators.



P. A. SHOBBRG. COMBINED HANDLE AND PULLEY FOR CREAM SEPARATORS.

APPLIOATIOH FILED DEG. 1"], 1910.

Patented Aug. 8, 1911.

FRANK A. SHOBERG, OF HOT SPRINGS, SOUTHpDAKO'IA.

COMBINED HANDLE AND PULLEY FOR CREAM-SFPARATORS.

Specification of Letters Patent.

Pzitented A11 8, 1911.

Application filed December 17, 1910. .Serial No. 597,792.

To (1U Hf/10777. it may concern Be it known that I, Fawn A. Snonnno, a citizen of the United States, and a resident of Hot Springs, in the county of Fall River and State of South Dakota, have invented an Improved Combined Handle and Pulley for .reaiii-Separators, of which the following is a specification.

It is important that centrifugal creamseparators shall be run at a uniform speed, and. since the gas engines or other motors ordinarily employed for driving them often rotate at varying speeds, or, in common parlance, have a jerky motion, spring attachments have been devised for connecting the band-wheel or -pnlley"ivith the shaft of the separator.

My invention line,and is embodied in the construction, arrangcn'ient, and combination of parts hereinafter described, and illustrated in the accompanying drawing, in Which- Figure 1 is apcrspectivc view of a centrif ugal cream-separator with my invention applied. F 2 is an enlarged vertical section on the line 2---2 of Fig. 3. Fig. 3 is a transverse section on the line it t of Fig. 2. Fig. 1 is a vertical cross section on the line 1-4 of Fig. Figs. 5 and 6 are sectional views illustrating the ratchet clutch connecting the armed hub with the collar of the separator shaft. Fig. 7 is a cross section on the line 7.-7 of Fig. 3.

A crank], a baml-whecl or -pulley 2, and

a hub 3, having a radial arm 3, are allmounted loose on the journal of the separator shaft, and are opcrathely connected with each other and the shaftby means to be now described.

The shaft- 4 is provided with a collar 5 at the inner end of its journal, and the armed lmb 3 has a spring-projected pin 6- sce Figs. 3. to 7--that enters a recess 7 in the collar 5, which recess is PLOVltlOtl at its deeper end with a shoulder S. Thcrecess is formed upon the arc of a circle concentric with the shaft journal, and its bottom is inclined inward from the face of the collar to the shoulder 8, as clearly indicated in Figs. 1, 5, and (3. Thus, what may be termed a ratchet clutch is formed, which serves to lock the hub to the shaft when the hub is turned tothe right, in which case the pin slides into the recess 7 and down the inclined bottom of the saint until it abuts the shoulder 8, as shown in Figs. 4 and (3.

is an improvement in this The outer end df'the hub arm 3 is connected by a spiralspring 9 to a pin projecting from the outer end of one of the pulley spokes. The arrangement of the spring 9 1s such that when. the band-wheel or -pulley 2 is rotated to the right, as indicated by arrow .in Fig. 1, traction will be applied, through the spring, to the hub arm, so that the hub 3 will be carried around in the same direction and its spring-pin 6 will thus be caused to ride into the recess 7 and engage the shoulder S- on the shaft collar, as shown in Figs. 1 and 5. The pulley 2 is, therefore, elastically connected to the hub and through it to the shaft, so that the jerky motion of the gas-motor will not be transmitted, or atleastin but very slight degree, to the separator shaft, which will be consequently run .at a practically uniform speed.

The connection between the crank 1 and the hub 2 of the'pulley is illustrated in Figs. 1 and 7 The connection is efi'ected by means of a ratchet clutch similar in all respects, as well as in operation, to the ratchet clutch already described as connecting the hub 3 with the shaft collar 5. That is to say, a spring-projected pin 11 is arranged in the hub of the crankand projects into a shouldered recess 12 as indicated in Fig. 7. The bottom of the recess 12 being inclined in the same way as the recess 7 ofthe shaft collar, it. is apparent that, when the crank is rotated to the right, or in the direction of the double arrow (Fig. 1), the pin will ride into,the recess and engage the shoulder thereof, so as to rotate the band wheel or pulley 1 with it. The crank is used when it is desired to start the machine and its rotation is kept up until the speed equals that which it is desired the machine shall have when operated by the motor. In other words,'thc belt, which in practice runs from the motor on the pulley 2, is not slipped on the latter until its rotation has attained the desired maximum. Then, the crank being released, it willthenccforth hang vertical.

consisting, in combination with the journal hub, a ratchet and spring clutch connecting the hub with the shaft and another clutch connecting the crank with the band pulley,

whereby they are locked together onlv when the crank is rotated in one directiongand a spiralspring connecting the outer end of the 10 hub arm with a, spoke of the band pulley,

as shown and described.

. FRANK A. SHOBERG. Witnesses: e

G. TILLMAN THOMPSON,

HENRY MAnTY. 

